Thanks for writing to us.
A hard painful lump on the calf could be a muscle
mass, a lipoma
, an abscess
to deep vein thrombosis. A physical examination is necessary for proper diagnosis and initiation of treatment. Meanwhile for symptomatic relief you can do a hot fomentation and keep your foot elevated while resting.
I hope this information has been both informative and helpful for you.
Dr. Rakhi Tayal